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Finding the Fourth Proportional to 318,870.30, 440,043.99 and 175,630.86

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Solution

The fourth proportional to 318,870.30, 440,043.99 and 175,630.86 is: 242,372.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,870.30 : 440,043.99 = 175,630.86 : x
  2. Step 2: Convert to fraction form
    318,870.30/440,043.99 = 175,630.86/x
  3. Step 3: Cross multiply
    318,870.30x = 440,043.99 × 175,630.86
  4. Step 4: Simplify right side
    318,870.30x = 77,285,304,401.53
  5. Step 5: Solve for x
    x = 77,285,304,401.53/318,870.30
  6. Step 6: Final answer
    x = 242,372.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.